Micrometer watch-regulator



C(W. MERTZ! Micrometer Watch Regulator.

Pa-tnted June 22,1880.

J71 Vania? N PETERS PNOTO-LITMOGRAFHER. WASHlNG UNITED STATES PATENT OFFICE.

CARL W. MERTZ, OF REPUBLIC, MICHIGAN.

MICROM ETER WATCH-REGULATOR.

SPECIFICATION forming part of Letters Patent No. 229,162, dated June 22, 1880. Application filed February 26, 1880.

To all whom it may concern Be it known that I, CARL V. MERTZ, of Republie,in the county of Marquette and State of Michigan, have invented an Improvement in lilicrometer-Regulators, of which the followin g is a specification.

The nature of my invention relates to certain new and useful improvements in the construction of micrometerregulators, whereby the most minute adjustment may be made to the watch-movement.

The invention consists in the peculiar eonstruetion, arrangement, and combination of the various parts, all as more fully hereinafter set forth.

I am aware that various regulators have been patented wherein a screw or threaded bolt has been employed to act directly or indirectly upon the regulator-arm, and others by means ot'attachments to the balance-bridge.

It is a well-known fact that in order to regulate a watch so that it will be a correct timekeeper the most minute movement of the regulator-arm which acts upon the balance-spring must be had. Watch makers and repairers are aware that it requires skill and patience to take down, clean, and .readjust a watch provided with a micrometer-regulator such as are now in use, from the fact that in so cleaning the parts which regulate the watch in its movements are, in most cases, necessarily displaced and when such is not the case they are invariably displaced during the process of cleaning.

It is the object of myinvention to construct a regulator by means of which the regulatorarm may be most minutely adjusted, and one which it will be almost impossible to disarrange.

In the drawings, Figure l is a plan view of the top plate of a watch provided with my improved regulator. Figs. 2, 3, and L are enlarged details of construction.

In the accompanying drawings, which form a part of this specification, A represents the top plate of a watch, upon which are mounted edge and outer face, and

the balance-bridge B and regulator-arin O, of the usual construction.

The plate A is provided with the slots 0 c, the former, 0, receiving the body of the threaded shaft D, and the latter, 0, receiving its head or disk F. The plate A is also provided with recesses r 1', which form journal-bearings for the end journals of the shaft D. held in place by the arms a oi" the index-bridge E, which is secured to the plate by means of the screws 1). Upon one end of this shaft Dis rigidly secured a disk, F, which has notches cut in its by means of which the shaft D is operated. lhreaded upon this shaft between the arms a of the index-bridge is a nut, Gr, provided with a slotted head, H, with which engages a pin, 1, projecting downward from the under side of the regulator-arm.

In practice, as the shaft D is turned in either direction the nut G is caused to travel along the shaft and move the regulatorarni, so as to increase or diminish the tension of the bat ance-sprin g and cause the watch to have a faster or slower movement, as may be required.

When it is desired to clean or repair a watch provided with a regulator constructed as herein described every part may be removed with-- out danger of disturbing the nut G from its regulated position upon the shaft; and in building up it is only required to put the pin I in the slot of nut G, and the watch will keep the same time as before, no regulating being required.

That I claim as my invention is- The plate A, provided with the slots 0 c and recesses r, in combination with the indexbridge E, having arms a, holding the shaftjournals in place, threaded shaft D, nut G, provided with slotted head H, and regulator-arm 0, having the pin 1, substantially as described, and for the purpose set forth.

CARL \V. MERTZ.

Witnesses E. HART, A. P. LEoPoLD. 

